ALGEBRA I (Common Core) Thursday, June 16, :15 a.m. to 12:15 p.m., only

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1 ALGEBRA I (COMMON CORE) The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION ALGEBRA I (Common Core) Thursday, June 16, :15 a.m. to 12:15 p.m., only Student Name: School Name: The possession or use of any communications device is strictly prohibited when taking this examination. If you have or use any communications device, no matter how briefly, your examination will be invalidated and no score will be calculated for you. Print your name and the name of your school on the lines above. A separate answer sheet for Part I has been provided to you. Follow the instructions from the proctor for completing the student information on your answer sheet. This examination has four parts, with a total of 37 questions. You must answer all questions in this examination. Record your answers to the Part I multiple-choice questions on the separate answer sheet. Write your answers to the questions in Parts II, III, and IV directly in this booklet. All work should be written in pen, except for graphs and drawings, which should be done in pencil. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. The formulas that you may need to answer some questions in this examination are found at the end of the examination. This sheet is perforated so you may remove it from this booklet. Scrap paper is not permitted for any part of this examination, but you may use the blank spaces in this booklet as scrap paper. A perforated sheet of scrap graph paper is provided at the end of this booklet for any question for which graphing may be helpful but is not required. You may remove this sheet from this booklet. Any work done on this sheet of scrap graph paper will not be scored. When you have completed the examination, you must sign the statement printed at the end of the answer sheet, indicating that you had no unlawful knowledge of the questions or answers prior to the examination and that you have neither given nor received assistance in answering any of the questions during the examination. Your answer sheet cannot be accepted if you fail to sign this declaration. Notice A graphing calculator and a straightedge (ruler) must be available for you to use while taking this examination. DO NOT OPEN THIS EXAMINATION BOOKLET UNTIL THE SIGNAL IS GIVEN. ALGEBRA I (COMMON CORE)

2 Part I Answer all 24 questions in this part. Each correct answer will receive 2 credits. No partial credit will be allowed. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For each statement or question, choose the word or expression that, of those given, best completes the statement or answers the question. Record your answers on your separate answer sheet. [48] 1 The expression x 4 16 is equivalent to (1) (x 2 8)(x 2 8) (3) (x 2 4)(x 2 4) (2) (x 2 8)(x 2 8) (4) (x 2 4)(x 2 4) Use this space for computations. 2 An expression of the fifth degree is written with a leading coefficient of seven and a constant of six. Which expression is correctly written for these conditions? (1) 6x 5 x 4 7 (3) 6x 7 x 5 5 (2) 7x 6 6x 4 5 (4) 7x 5 2x The table below shows the year and the number of households in a building that had high-speed broadband internet access. Number of Households Year For which interval of time was the average rate of change the smallest? (1) (3) (2) (4) Algebra I (Common Core) June 16 [2]

3 4 The scatterplot below compares the number of bags of popcorn and the number of sodas sold at each performance of the circus over one week. Use this space for computations. y Popcorn Sales and Soda Sales Soda Sales Popcorn Sales x Which conclusion can be drawn from the scatterplot? (1) There is a negative correlation between popcorn sales and soda sales. (2) There is a positive correlation between popcorn sales and soda sales. (3) There is no correlation between popcorn sales and soda sales. (4) Buying popcorn causes people to buy soda. 5 The Celluloid Cinema sold 150 tickets to a movie. Some of these were child tickets and the rest were adult tickets. A child ticket cost $7.75 and an adult ticket cost $ If the cinema sold $1470 worth of tickets, which system of equations could be used to determine how many adult tickets, a, and how many child tickets, c, were sold? (1) a c 150 (3) a c a 7.75c a 10.25c 1470 (2) a c 1470 (4) a c a 7.75c a 10.25c 150 Algebra I (Common Core) June 16 [3] [OVER]

4 6 The tables below show the values of four different functions for given values of x. Use this space for computations. x f(x) x g(x) x h(x) x k(x) Which table represents a linear function? (1) f(x) (3) h(x) (2) g(x) (4) k(x) 7 The acidity in a swimming pool is considered normal if the average of three ph readings, p, is defined such that 7.0 p 7.8. If the first two readings are 7.2 and 7.6, which value for the third reading will result in an overall rating of normal? (1) 6.2 (3) 8.6 (2) 7.3 (4) Dan took 12.5 seconds to run the 100-meter dash. He calculated the time to be approximately (1) minute (3) hour (2) 750 minutes (4) hour 9 When 3x 2 5(x 4) is solved for x, the solution is (1) x 3 (3) x 11 (2) x 3 (4) x 11 Algebra I (Common Core) June 16 [4]

5 10 The expression 3(x 2 1) (x 2 7x 10) is equivalent to (1) 2x 2 7x 7 (3) 2x 2 7x 9 (2) 2x 2 7x 13 (4) 2x 2 7x 11 Use this space for computations. 11 The range of the function f(x) x 2 2x 8 is all real numbers (1) less than or equal to 9 (2) greater than or equal to 9 (3) less than or equal to 1 (4) greater than or equal to 1 12 The zeros of the function f(x) x 2 5x 6 are (1) 1 and 6 (3) 2 and 3 (2) 1 and 6 (4) 2 and 3 13 In a sequence, the first term is 4 and the common difference is 3. The fifth term of this sequence is (1) 11 (3) 16 (2) 8 (4) The growth of a certain organism can be modeled by C(t) 10(1.029) 24t, where C(t) is the total number of cells after t hours. Which function is approximately equivalent to C(t)? (1) C(t) 240(.083) 24t (3) C(t) 10(1.986) t (2) C(t) 10(.083) t (4) C(t) 240(1.986) t 24 Algebra I (Common Core) June 16 [5] [OVER]

6 15 A public opinion poll was taken to explore the relationship between age and support for a candidate in an election. The results of the poll are summarized in the table below. Use this space for computations. Age For Against No Opinion Over What percent of the age group was for the candidate? (1) 15 (3) 40 (2) 25 (4) Which equation and ordered pair represent the correct vertex form and vertex for j(x) x 2 12x 7? (1) j(x) (x 6) 2 43, (6,43) (2) j(x) (x 6) 2 43, ( 6,43) (3) j(x) (x 6) 2 29, (6, 29) (4) j(x) (x 6) 2 29, ( 6, 29) 17 A student invests $500 for 3 years in a savings account that earns 4% interest per year. No further deposits or withdrawals are made during this time. Which statement does not yield the correct balance in the account at the end of 3 years? (1) 500(1.04) 3 (2) 500(1.04) 3 (3) 500(1.04)(1.04)(1.04) (4) (.04) 520(.04) 540.8(.04) Algebra I (Common Core) June 16 [6]

7 18 The line represented by the equation 4y 2x 33.6 shares a solution point with the line represented by the table below. Use this space for computations. x y The solution for this system is (1) ( 14.0, 1.4) (3) (1.9,4.6) (2) ( 6.8,5.0) (4) (6.0,5.4) 19 What is the solution of the equation 2(x 2) ? (1) 6, only (3) 2 and 6 (2) 2, only (4) 6 and 2 20 The dot plot shown below represents the number of pets owned by students in a class Which statement about the data is not true? (1) The median is 3. (2) The interquartile range is 2. (3) The mean is 3. (4) The data contain no outliers. Algebra I (Common Core) June 16 [7] [OVER]

8 21 What is the largest integer, x, for which the value of f(x) 5x 4 30x 2 9 will be greater than the value of g(x) 3 x? (1) 7 (3) 9 (2) 8 (4) 10 Use this space for computations. 22 The graphs of the functions f(x) x 3 1 and g(x) 2x 1 are drawn. Which statement about these functions is true? (1) The solution to f(x) g(x) is 3. (2) The solution to f(x) g(x) is 1. (3) The graphs intersect when y 1. (4) The graphs intersect when x A store sells self-serve frozen yogurt sundaes. The function C(w) represents the cost, in dollars, of a sundae weighing w ounces. An appropriate domain for the function would be (1) integers (2) rational numbers (3) nonnegative integers (4) nonnegative rational numbers 24 Sara was asked to solve this word problem: The product of two consecutive integers is 156. What are the integers? What type of equation should she create to solve this problem? (1) linear (3) exponential (2) quadratic (4) absolute value Algebra I (Common Core) June 16 [8]

9 Part II Answer all 8 questions in this part. Each correct answer will receive 2 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [16] 25 Given that f(x) 2x 1, find g(x) if g(x) 2[ f(x)] Determine if the product of 3 2 and 8 18 is rational or irrational. Explain your answer. Algebra I (Common Core) June 16 [9] [OVER]

10 27 On the set of axes below, draw the graph of y x 2 4x 1. y x State the equation of the axis of symmetry. Algebra I (Common Core) June 16 [10]

11 28 Amy solved the equation 2x 2 5x She stated that the solutions to the equation were and 6. Do you agree with Amy s solutions? Explain why or why not. 7 2 Algebra I (Common Core) June 16 [11] [OVER]

12 29 Sue and Kathy were doing their algebra homework. They were asked to write the equation of 1 the line that passes through the points ( 3,4) and (6,1). Sue wrote y 4 (x 3) and Kathy 3 1 wrote y x 3. Justify why both students are correct. 3 Algebra I (Common Core) June 16 [12]

13 30 During a recent snowstorm in Red Hook, NY, Jaime noted that there were 4 inches of snow on the ground at 3:00 p.m., and there were 6 inches of snow on the ground at 7:00 p.m. If she were to graph these data, what does the slope of the line connecting these two points represent in the context of this problem? Algebra I (Common Core) June 16 [13] [OVER]

14 31 The formula for the sum of the degree measures of the interior angles of a polygon is S 180(n 2). Solve for n, the number of sides of the polygon, in terms of S. Algebra I (Common Core) June 16 [14]

15 32 In the diagram below, f(x) x 3 2x 2 is graphed. Also graphed is g(x), the result of a translation of f(x). y 2 1 f(x) x 1 g(x) Determine an equation of g(x). Explain your reasoning. Algebra I (Common Core) June 16 [15] [OVER]

16 Part III Answer all 4 questions in this part. Each correct answer will receive 4 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided for each question to determine your answer. Note that diagrams are not necessarily drawn to scale. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [16] 33 The height, H, in feet, of an object dropped from the top of a building after t seconds is given by H(t) 16t How many feet did the object fall between one and two seconds after it was dropped? Determine, algebraically, how many seconds it will take for the object to reach the ground. Algebra I (Common Core) June 16 [16]

17 34 The sum of two numbers, x and y, is more than 8. When you double x and add it to y, the sum is less than 14. Graph the inequalities that represent this scenario on the set of axes below. y x Kai says that the point (6,2) is a solution to this system. Determine if he is correct and explain your reasoning. Algebra I (Common Core) June 16 [17] [OVER]

18 35 An airplane leaves New York City and heads toward Los Angeles. As it climbs, the plane gradually increases its speed until it reaches cruising altitude, at which time it maintains a constant speed for several hours as long as it stays at cruising altitude. After flying for 32 minutes, the plane reaches cruising altitude and has flown 192 miles. After flying for a total of 92 minutes, the plane has flown a total of 762 miles. Determine the speed of the plane, at cruising altitude, in miles per minute. Write an equation to represent the number of miles the plane has flown, y, during x minutes at cruising altitude, only. Assuming that the plane maintains its speed at cruising altitude, determine the total number of miles the plane has flown 2 hours into the flight. Algebra I (Common Core) June 16 [18]

19 36 On the set of axes below, graph 1 g(x) x 1 2 f(x) and 2x 1, x x, x > 1 y x How many values of x satisfy the equation f(x) g(x)? Explain your answer, using evidence from your graphs. Algebra I (Common Core) June 16 [19] [OVER]

20 Part IV Answer the question in this part. A correct answer will receive 6 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. Utilize the information provided to determine your answer. Note that diagrams are not necessarily drawn to scale. A correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [6] 37 Franco and Caryl went to a bakery to buy desserts. Franco bought 3 packages of cupcakes and 2 packages of brownies for $19. Caryl bought 2 packages of cupcakes and 4 packages of brownies for $24. Let x equal the price of one package of cupcakes and y equal the price of one package of brownies. Write a system of equations that describes the given situation. On the set of axes below, graph the system of equations. y Determine the exact cost of one package of cupcakes and the exact cost of one package of brownies in dollars and cents. Justify your solution. x Algebra I (Common Core) June 16 [20]

21 Tear Here Tear Here Scrap Graph Paper This sheet will not be scored.

22 Scrap Graph Paper This sheet will not be scored. Tear Here Tear Here

23 High School Math Reference Sheet Tear Here Tear Here 1 inch 2.54 centimeters 1 kilometer 0.62 mile 1 cup 8 fluid ounces 1 meter inches 1 pound 16 ounces 1 pint 2 cups 1 mile 5280 feet 1 pound kilogram 1 quart 2 pints 1 mile 1760 yards 1 kilogram 2.2 pounds 1 gallon 4 quarts 1 mile kilometers 1 ton 2000 pounds 1 gallon liters 1 liter gallon 1 liter 1000 cubic centimeters 1 Triangle A bh 2 Parallelogram A bh Circle A πr 2 Circle General Prisms Cylinder C πd or C 2πr V Bh V πr 2 h 4 Sphere V πr Cone V πr 2 h 3 1 Pyramid V Bh 3 Pythagorean Theorem Quadratic Formula Arithmetic Sequence Geometric Sequence Geometric Series a 2 b 2 c 2 x b 4ac 2a b 2 a n a 1 (n 1)d a n a 1 r n 1 n a a r 1 1 S n where r 1 1 r 180 Radians 1 radian degrees π π Degrees 1 degree radians 180 Exponential Growth/Decay A A 0 e k(t t 0) B 0 Algebra I (Common Core) June 16 [23]

24 ALGEBRA I (COMMON CORE) Tear Here Tear Here Printed on Recycled Paper ALGEBRA I (COMMON CORE)